Which of the following statements about the y x4r02ls vobl8zrb(++5bsnf 9cl n-neffect of surface area and volume on the cell’s p oz-lbrlc l924yxvn08 nb+5rb nss f(+rocesses is false?

  Which statement best describesx co2cz3x-r a5ahddd 1k-vs/- stem cells?

  Which is a correct description of the cell type adapted for gas exchan)zl14ngyxp h+ ge in the lungs?)+h ny 1px4lzg

  Which of the following exyl m-e -8wxodf0cn)2pplains the limitations on cell size?

  What is this cell's most likely primary function, and where could it be lonsvf)8gs ,n4hcated in av8h sng)fs4, n mammal?

  Which of the following characteristics of t* h-3flj zdz*dype I pneumocytes contribute to increasinz3l-zh dfj** dg the rate of gas exchange?
I.
Cells are flattened
II.
Secretion of a surfactant
III.
Cover less than 10% of the alveolar surface

  A patient receives a bone marrow transplant from a 36 ddd4u g12y yh6year old. One of the functions of these cells is to produce red and white blood cells. What type of stem cells has the patiendyy16 g h2u4ddt received?

  Based on the Venn diagram, which identifies cardiac muscleh3e0 +m)feu1vzwfe *f cells and striated muscle fib +f fvmheee 0u1)*fzw3res?

Below is a diagram of a motor neuron. Neurons are the longest (rd-6/boy,ireaa9flk (fai 6 cells in the human b6fifar(9 b/y , kdlei6 -a(oarody.
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimes suffer from infant respira 2pl-f7afoqda saibe a33g.3d : 2krt6tory distress syndrome, which could b:i62b7pfqt fsa 33eaka2 3largod-d . e caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shows two different alveoli structures.


1.Describe one feature of the surfactant.

2.Suggest a treatment for infant respiratory distress syndrome.

3.Draw a labelled diagram of the structures in an alveolus that are important for gas exchange.

  Which of the following is a reason that embryonic stm mu j0a0-5a7awo6n : jmkl0r1mr:pxnem cells are not used in the treatment of leukae0naorm:j5pm1jx m mnwaa7r-k 0 6u 0:lmia?

  The table shows the diameters om ( sx,q ,q 91rahaagpgr2anp94,v2u cf red blood cells from different organisms. Which red blood cell wil ahg mgs2,aqp, ,(9n12 4a9 xucpaqvrrl have the highest surface area to volume ratio?

1.Explain how the shape of erythrocytes and cob.(k mpu:d p(ells lining the proximal convoluted tubule make these cells more adapted to the functionspkoud( pb :.(m they perform.

2.Compare and contrast the structure of striated muscle cells and cardiac muscle fibres.

3.Explain how the structure of egg and sperm cells are adapted to their functions.

  Which statements about embryonic stem cells and specialised ce2 rat+zr+(k gklls is/are not true? r (t2r++kzkag

I. Embryonic stem cells have higher levels of DNA methylation than differentiated cells
II. Specialised cells are more differentiated than embryonic stem cells
III. Most specialised cells and embryonic stem cells both contain the entire genome of an organism

  In humans, which of the following is the correct order from smallest to largl wjtnl 8w/.zyky37qv0p l9r6 est?v rywj9 zkllw q0lpt6.3 8n/7y

  Which row in the following table gives the correct disadvantages of the difl*+d*ud*z*h xd)fslmferent stem*d*fl+ **dd)xsz ulm h cell sources for therapeutic uses?

1.Describe how the use of stem cells may be used to treat type I diabetes5s*u*/k9e9jwf8v p c0,eqnv)rsy 7 tn0yt rqa in the9 t 7pq ryerje8v,9 *nc t*y/u)nf0ws kvas05q future.

2.Explain the factors that limit cell size in humans.

3.Explain how red blood cells and striated muscle fibres are adapted to their function.

Below are diagrams of spe (qwhhx;q0(0izy j9o ncialised cells (not to scale).

1.Put these cells in order of size, from the smallest to the largest.

2.Compare and contrast totipotent, pluripotent and multipotent stem cells.